A decrepit Anthony Marshall, will be wheeled into court this afternoon to finally surrender to prison for swiping millions of his philanthropist mother’s fortune, after exhausting a string of 11th-hour pleas for mercy.

An appeals court yesterday slapped down Anthony Marshall’s last attempt to skirt jail time for bilking his famously generous mother — socialite Brooke Astor — when she was addled by Alzheimer’s disease.

Manhattan Supreme Court Justice A. Kirke Bartley, the same judge who presided over the six-month trial in 2009, stood by his decision to incarcerate Marshall, 89, for one to three years for grand larceny. An assistant DA fumed that Marshall and his co-defendant, disgraced lawyer Francis Morrissey, 72, were getting special treatment by being allowed to live free during years of appeals because of their wealth and status.

“It’s not the way every other defendant in this state is treated,” prosecutor Peirce Moser told the judge.

Bartley also shot down a motion by the duo’s attorneys for a retrial based on a last-minute affidavit filed by a juror recanting her guilty verdict.

Morrissey was shackled by court officers and hauled off to the slammer to start his own one- to three-year stint, his head down and his face expressionless as his sister sobbed in the gallery.

Bartley said he found juror Judi DeMarco’s sworn affidavit claiming she was coerced into a guilty verdict unconvincing.

”This 11th-hour affidavit continues to illustrate her conflict,” Barltey said, noting DeMarco had told Bloomberg News after the 2009 conviction that she had voted to convict based on the evidence.

Marshall’s own son, Philip, who first sparked the DA investigation into his father’s wrongdoings, claiming he was mistreating the elderly Brooke, still holds his dad responsible for the crimes.

“I hope my father apologizes and seeks forgiveness from those so traumatically affected — most especially his mother,” he told The Post.